=Change from the Viol to the Violin=.—The reader who has studied the principles of construction and playing of the old string instruments, as explained in Lesson XV, or examined them in museums, will not have failed to note that they were complicated and limited in technic. The members of this family were large and cumbersome, troublesome to handle and not particularly graceful or pleasing to the eye; the position in which the player was forced to hold them was difficult to maintain and not conducive to a rapid, facile technic. Now, the direction of a perfected art is always toward simplicity; the various members of the viol family were to yield place to a new instrument, a modification of the original type, and one that possessed some striking and valuable advantages over the viol. Another element that aided in the change from the viol was the efforts of composers to produce a distinctive instrumental music, a style which demanded an instrument with a higher range than the viols, corresponding to the highest female voice. Still another element to be considered was the stir in intellectual, social, political and commercial life which was evident everywhere, the product of the Renaissance. Music was influenced by this spirit; composers were seeking new forms in which to express their thoughts and were calling for new and better media for presenting them to others. As composers gained in breadth and power of conception, instruments were improved even beyond their demands; the increase in resources stimulated, in turn, the composers. At this period music was on the threshold of a splendid activity in instrumental lines, the reign of the old choral music and the contrapuntal composer was being challenged, and the way prepared for Haydn, Mozart and Beethoven.